Tonight in St Helens
Perfect sleeping conditions
You'll sleep beautifully.
Sleep Score
9
⁄10
Excellent
Overnight low
16°C
Comfortable
Stickiness
16°C
Slightly muggy
Cooling by 4am
5.1°C
Cools nicely
Tonight's plan
Comfortable range tonight — good sleeping weather.
Windows
Open
Cool air tonight — let it in
Heating
Off
Warm enough — heating would make it harder to sleep, not easier
Bedding
Normal duvet
Standard weight — tonight sits right in the comfortable range
Fan
Not needed
Cool enough without — save the electricity
Based on temperature, dew point, wind, and overnight cooling
Why this matters
At 16°C, tonight sits right in the zone where sleep research says most adults sleep best. Your body can regulate its temperature naturally without any intervention.
A 5.1°C drop between bedtime and 4am is substantial. This natural cooling aligns with your circadian rhythm — your body temperature dips in the early hours, and the environment cooling alongside it produces the deepest sleep of the night.
The week ahead
Sun will be the best night, fri the worst.
St Helens · next 7 nights
Every night this week looks comfortable.